Chpt 11 Vocb

Question 0

a segment of DNA whose sequence of nucleotides codes for a specific functional product

Answer 0

Gene

Question 1

The study of heredity.

Answer 1

Genetics

Question 2

a trait that is expressed in a heterozygous organism.

Answer 2

Dominant

Question 3

a trait whose expression is masked in a heterozygous organism.

Answer 3

Recessive

Question 4

alternate forms of a gene

Answer 4

Alleles

Question 5

having two identical alleles for a given trait.

Answer 5

Homozygous

Question 6

having two different alleles for a given trait; a carrier

Answer 6

Heterozygous

Question 7

the genetic makeup of an organism

Answer 7

Genotype

Question 8

is the appearance of visible traits of an organism.

Answer 8

Phenotype

Question 9

a genetic cross between individuals differing in one trait.

Answer 9

Monohybrid cross

Question 10

a genetic cross between individuals differing in two traits.

Answer 10

Dihybrid Cross

Question 11

when both alleles in a heterozygous organism are expressed

Answer 11

Codominance

Question 12

are genes that have more than two allelic forms.

Answer 12

Multiple Alleles

Question 13

(Polygenic traits)- when the expression of a trait is controlled by several genes and also influenced by the environment.

Answer 13

Multifactorial Trait

Question 14

genes that are located on the same chromosome.

Answer 14

Linked Genes

Question 15

a trait determined by a gene carried on the X chromosome.

Answer 15

X- Linked Gene

Question 16

is a method of organizing the chromosomes of a cell in relation to number, size, and type.

Answer 16

Karyotype

Question 17

failure of a pair of chromosomes to separate during meiosis.

Answer 17

Nondisjunction

Question 18

A condition known as what exists when three chromosomes are present instead of two.

Answer 18

trisomy

Question 19

an extra X chromosome in a male (XXY)

Answer 19

Klinefelter Syndrome

Question 20

(Monosomy X)– only one sex chromosome (XO)

Answer 20

Turner Syndrome